Incandescent gas-mantle.



UNITED sTATEs EATENT OEEIOE.

JACOB I. ROBIN, OF NEW YORK, N. Y.

INCANDESCENT GAS-MANTLE.

To all whom it may concern:

Be it known that I, .IACOB I. ROEIN, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in Incandescent Gas-Mantles, of which thefollowing is a specification.

My invention relates to incandescent mantles and has for its object the cheap and economic construction of a mantle which is not apt to become broken or fractured when burned and ready for use in its incandescent condition.

rlhese and other objects and details of this invention together with the mode of making the same, will be explained in the following specification and set fort-h in the appended claims.

In the drawings forming part of this application and accompanying same, like letters of reference are used to designate the same parts in the Various figures.

Figure l is a blank in its condition preparatory to be made into a mantle. Fig. 2 represents the mantle in its first stage of manufacture. Fig. 3 represents the same in its second stage. Fig. 4 represents the same in its third stage. Fig. 5 represents the mantle constructed in accordance with my improved method. Fig. 6 represents a mantle made in accordance with prior methods.

In the manufacture of incandescent gas mantles7 it is customary to use fabric of cylindrical form and to bunch or collect one end, as shown in Fig. 6, and run a thread or cord through the upper ends of the folds to collect these folds permanently and the cord is then made tight, collecting these folds as shown in said iigure. A needle with a cord is then passed horizontally through these folds at any point and a loop l() is made from this thread by which the mantle is hung from a metallic support over the burner. A'Ihe result of this operation is the production of a mantle which has a dense and heavy mass at its top with a number of folds and plaits Which are very brittle and tend to Weaven the mantle at this point. This accumulation of plaits does not acquire the incandescent state that the balance of the mantle assumes and remains a dense and dark mass at the top of the mantle. It also requires exceeding care and skill to pass the original cord through these folds in such a manner that they will be perfectly horizontal to the vertical line of suspension and consequently the loop l0 fails to perform its function and hang the mantle in a true vertical line and the mantle is consequently liable to come in Contact with Specification of Letters Patent. Application flied Ap'rn 4,1906. sentira. 309.733.

Patented Jly 3o, 1907.

the burner or the glass chimney and the least vibration is apt to cause fractures and breakages in the mantle..

With a View to overcoming this objection and to produce a mantle which will be less liable to these disadvantages and dangers, I form the mantle on a block of Wood or similar material Il, having a rounded head which is to shape the mantle about to be formed, and gather the end of the blank'l2 over the head of the block and Wind around same when gathered, a cord I3 tightly tying the same. "Ihe remaining portion l4of the mantle which is in a saturated state While this operation is being performed7 is now pressed down upon the rounded head of the mantle and made to adhere closely thereto, hiding the cord 13 from view as shown in Eig. 3.

The next operation is the stripping of the mantle l2 from the block Il which is then turned inside out and again put on the block in its reversed condition as shown in Fig. 4 Where it will be seen that the end I4 is now completely hidden from View and the upper end of the mantle is quite smooth and symmetrical. By means of a needle l5, I now carry a cord 16 beneath the band 13 as shown in Fig. 4 and With sufficient amount of cord 16, I form the loop 17 as shown in Fig. 5, the mantle this time having to some extent, dried and'is molded or shaped to its proper form as shown in the molded latter figure.

In the production of a mantle in accordance with the above described method7 I am able to produce a mantle in a much shorter space of time than that which is heretofore consumed and I also produce a mantle Whose incandescence is thorough and practically complete, besides providing a suspension loop which Will hold the same in a perfectly vertical position.

In the manufacture of this mantle as above described, various modifications and details may be found desirable Without departing from the broad idea set forth in the claims.

Having thus described the invention what I claim as new is The herein described mantle having its upper gathered end disposed inside the mantle and secured by a cord, and a suspension loop passed transversely through the upper end of the mantle underneath said cord.

In testimony whereof, I affix my signature in presence of two Witnesses.

JACOB I. ROBIN. [L S.]

Witnesses JOSEPH FRANK, JAMES F. DUHAMEL. 

